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DevOps

Posts published under the DevOps account are collective contributions by the dbi services DevOps consultants. The practice covers Kubernetes and container platforms, CI/CD toolchains, and infrastructure automation with Ansible and Terraform, including the YaK framework for multi-cloud deployments, helping organizations make their infrastructure reproducible, scalable, and efficient.

124 posts since October 2015

Rancher RKE2 templates – Assign members to clusters

When testing RKE2 templates, I faced an issue with member assignments. When creating the cluster, a management cluster name is generated with the format c-m-xxxxxxxx, but the ClusterRoleTemplateBinding requires the cluster name to work. After digging into Rancher source code, I found out how to set the management cluster name. So let’s start! Force the cluster name with RKE2 templates… 

Rancher RKE2: Introduction on RKE2 cluster template for AWS EC2

In Rancher, you can preconfigure your clusters and node configuration. Then your team can start provisioning clusters, with consistency and no misconfiguration. For RKE, templates are easily comprehensible and seamlessly integrated into the Rancher UI, making it user-friendly. For RKE2, we need to make use of the RKE2 cluster template. Get started with RKE2 cluster template RKE2 cluster template For… 

Kubernetes Networking by Using Cilium – Beginner Level

There seems to be a strong interest these days about understanding better networking in Kubernetes. This blog post is my contribution on this topic. I’ll do my best to explain it in a visual way and translate the techie part to an understandable language so that anybody can actually enjoy it. The best way to learn networking is by doing… 

Cloud Native Storage: Overview

When thinking of containers, Cloud Native Storage topic shines like an evidence. You have to handle this topic with care as it will carry your workload and configuration. This blog will be the first of a series talking about CNS and usage.I will try to cover as many aspects as possible and clear up the CNCF situation when you start… 

Reestablish administrator role access to Rancher users

Introduction I came across a situation where there were no more Administrator users in Rancher. Therefore there was no access to the local (Rancher) cluster and administration of Rancher through the UI. No user could configure and reassign the Administrator role. I will show you how to retrieve the Administrator role for your Rancher users. Solution The current default admin…